--- _id: '13920' abstract: - lang: eng text: We investigate the transient optical response in high-quality Cd0.88Zn0.12Te crystals in the regime of slow light propagation on the lower exciton-polariton branch. Femtosecond photoexcitation leads to very substantial transmission changes in a ∼10-meV broad spectral range within the transparency window of the unexcited semiconductor. These nonlinear optical signatures decay on picosecond time scales governed by carrier thermalization and recombination. The temporal and spectral dependence indicate the dynamical optical response as arising from excitation-induced dephasing and perturbed free induction decay. Model simulations for the optical response taking into account the actual exciton-polariton dispersion and excitation-induced dephasing of a nonlinearly driven two-level system support this interpretation. author: - first_name: J. full_name: Lohrenz, J. last_name: Lohrenz - first_name: S. full_name: Melzer, S. last_name: Melzer - first_name: C. full_name: Ruppert, C. last_name: Ruppert - first_name: I. A. full_name: Akimov, I. A. last_name: Akimov - first_name: H. full_name: Mariette, H. last_name: Mariette - first_name: Matthias full_name: Reichelt, Matthias id: '138' last_name: Reichelt - first_name: Alexander full_name: Trautmann, Alexander id: '38163' last_name: Trautmann - first_name: Torsten full_name: Meier, Torsten id: '344' last_name: Meier orcid: 0000-0001-8864-2072 - first_name: M. full_name: Betz, M. last_name: Betz citation: ama: Lohrenz J, Melzer S, Ruppert C, et al. Ultrafast dynamical response of the lower exciton-polariton branch in CdZnTe. Physical Review B. 2016;93(7). doi:10.1103/physrevb.93.075201 apa: Lohrenz, J., Melzer, S., Ruppert, C., Akimov, I. A., Mariette, H., Reichelt, M., Trautmann, A., Meier, T., & Betz, M. (2016). Ultrafast dynamical response of the lower exciton-polariton branch in CdZnTe. Physical Review B, 93(7). https://doi.org/10.1103/physrevb.93.075201 bibtex: '@article{Lohrenz_Melzer_Ruppert_Akimov_Mariette_Reichelt_Trautmann_Meier_Betz_2016, title={Ultrafast dynamical response of the lower exciton-polariton branch in CdZnTe}, volume={93}, DOI={10.1103/physrevb.93.075201}, number={7}, journal={Physical Review B}, author={Lohrenz, J. and Melzer, S. and Ruppert, C. and Akimov, I. A. and Mariette, H. and Reichelt, Matthias and Trautmann, Alexander and Meier, Torsten and Betz, M.}, year={2016} }' chicago: Lohrenz, J., S. Melzer, C. Ruppert, I. A. Akimov, H. Mariette, Matthias Reichelt, Alexander Trautmann, Torsten Meier, and M. Betz. “Ultrafast Dynamical Response of the Lower Exciton-Polariton Branch in CdZnTe.” Physical Review B 93, no. 7 (2016). https://doi.org/10.1103/physrevb.93.075201. ieee: 'J. Lohrenz et al., “Ultrafast dynamical response of the lower exciton-polariton branch in CdZnTe,” Physical Review B, vol. 93, no. 7, 2016, doi: 10.1103/physrevb.93.075201.' mla: Lohrenz, J., et al. “Ultrafast Dynamical Response of the Lower Exciton-Polariton Branch in CdZnTe.” Physical Review B, vol. 93, no. 7, 2016, doi:10.1103/physrevb.93.075201. short: J. Lohrenz, S. Melzer, C. Ruppert, I.A. Akimov, H. Mariette, M. Reichelt, A. Trautmann, T. Meier, M. Betz, Physical Review B 93 (2016). date_created: 2019-10-18T08:38:50Z date_updated: 2023-04-16T21:23:54Z department: - _id: '15' - _id: '170' - _id: '293' - _id: '230' - _id: '429' doi: 10.1103/physrevb.93.075201 funded_apc: '1' intvolume: ' 93' issue: '7' language: - iso: eng project: - _id: '53' name: TRR 142 - _id: '54' name: TRR 142 - Project Area A - _id: '59' name: TRR 142 - Subproject A2 - _id: '64' name: TRR 142 - Subproject A7 - _id: '56' name: TRR 142 - Project Area C - _id: '72' name: TRR 142 - Subproject C2 - _id: '52' name: Computing Resources Provided by the Paderborn Center for Parallel Computing - _id: '52' name: 'PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing' publication: Physical Review B publication_identifier: issn: - 2469-9950 - 2469-9969 publication_status: published status: public title: Ultrafast dynamical response of the lower exciton-polariton branch in CdZnTe type: journal_article user_id: '49063' volume: 93 year: '2016' ... --- _id: '13910' article_number: '34847' author: - first_name: Xuekai full_name: Ma, Xuekai id: '59416' last_name: Ma - first_name: Rodislav full_name: Driben, Rodislav last_name: Driben - first_name: Boris A. full_name: Malomed, Boris A. last_name: Malomed - first_name: Torsten full_name: Meier, Torsten id: '344' last_name: Meier orcid: 0000-0001-8864-2072 - first_name: Stefan full_name: Schumacher, Stefan id: '27271' last_name: Schumacher orcid: 0000-0003-4042-4951 citation: ama: Ma X, Driben R, Malomed BA, Meier T, Schumacher S. Two-dimensional symbiotic solitons and vortices in binary condensates with attractive cross-species interaction. Scientific Reports. 2016;6. doi:10.1038/srep34847 apa: Ma, X., Driben, R., Malomed, B. A., Meier, T., & Schumacher, S. (2016). Two-dimensional symbiotic solitons and vortices in binary condensates with attractive cross-species interaction. Scientific Reports, 6, Article 34847. https://doi.org/10.1038/srep34847 bibtex: '@article{Ma_Driben_Malomed_Meier_Schumacher_2016, title={Two-dimensional symbiotic solitons and vortices in binary condensates with attractive cross-species interaction}, volume={6}, DOI={10.1038/srep34847}, number={34847}, journal={Scientific Reports}, author={Ma, Xuekai and Driben, Rodislav and Malomed, Boris A. and Meier, Torsten and Schumacher, Stefan}, year={2016} }' chicago: Ma, Xuekai, Rodislav Driben, Boris A. Malomed, Torsten Meier, and Stefan Schumacher. “Two-Dimensional Symbiotic Solitons and Vortices in Binary Condensates with Attractive Cross-Species Interaction.” Scientific Reports 6 (2016). https://doi.org/10.1038/srep34847. ieee: 'X. Ma, R. Driben, B. A. Malomed, T. Meier, and S. Schumacher, “Two-dimensional symbiotic solitons and vortices in binary condensates with attractive cross-species interaction,” Scientific Reports, vol. 6, Art. no. 34847, 2016, doi: 10.1038/srep34847.' mla: Ma, Xuekai, et al. “Two-Dimensional Symbiotic Solitons and Vortices in Binary Condensates with Attractive Cross-Species Interaction.” Scientific Reports, vol. 6, 34847, 2016, doi:10.1038/srep34847. short: X. Ma, R. Driben, B.A. Malomed, T. Meier, S. Schumacher, Scientific Reports 6 (2016). date_created: 2019-10-18T08:16:22Z date_updated: 2025-12-05T13:52:02Z department: - _id: '15' - _id: '170' - _id: '293' - _id: '297' - _id: '705' - _id: '230' - _id: '429' - _id: '35' doi: 10.1038/srep34847 funded_apc: '1' intvolume: ' 6' language: - iso: eng project: - _id: '53' name: TRR 142 - _id: '54' name: TRR 142 - Project Area A - _id: '60' name: TRR 142 - Subproject A3 - _id: '59' name: TRR 142 - Subproject A2 - _id: '61' name: TRR 142 - Subproject A4 - _id: '56' name: TRR 142 - Project Area C - _id: '64' name: TRR 142 - Subproject A7 - _id: '72' name: TRR 142 - Subproject C2 - _id: '52' name: Computing Resources Provided by the Paderborn Center for Parallel Computing - _id: '52' name: 'PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing' - _id: '53' name: 'TRR 142: Maßgeschneiderte nichtlineare Photonik: Von grundlegenden Konzepten zu funktionellen Strukturen' publication: Scientific Reports publication_identifier: issn: - 2045-2322 publication_status: published status: public title: Two-dimensional symbiotic solitons and vortices in binary condensates with attractive cross-species interaction type: journal_article user_id: '16199' volume: 6 year: '2016' ... --- _id: '13919' article_number: '44' author: - first_name: E. full_name: Sternemann, E. last_name: Sternemann - first_name: T. full_name: Jostmeier, T. last_name: Jostmeier - first_name: C. full_name: Ruppert, C. last_name: Ruppert - first_name: S. full_name: Thunich, S. last_name: Thunich - first_name: H. T. full_name: Duc, H. T. last_name: Duc - first_name: R. full_name: Podzimski, R. last_name: Podzimski - first_name: Torsten full_name: Meier, Torsten id: '344' last_name: Meier orcid: 0000-0001-8864-2072 - first_name: M. full_name: Betz, M. last_name: Betz citation: ama: 'Sternemann E, Jostmeier T, Ruppert C, et al. Quantum interference control of electrical currents in GaAs microstructures: physics and spectroscopic applications. Applied Physics B. 2016;122. doi:10.1007/s00340-015-6310-y' apa: 'Sternemann, E., Jostmeier, T., Ruppert, C., Thunich, S., Duc, H. T., Podzimski, R., Meier, T., & Betz, M. (2016). Quantum interference control of electrical currents in GaAs microstructures: physics and spectroscopic applications. Applied Physics B, 122, Article 44. https://doi.org/10.1007/s00340-015-6310-y' bibtex: '@article{Sternemann_Jostmeier_Ruppert_Thunich_Duc_Podzimski_Meier_Betz_2016, title={Quantum interference control of electrical currents in GaAs microstructures: physics and spectroscopic applications}, volume={122}, DOI={10.1007/s00340-015-6310-y}, number={44}, journal={Applied Physics B}, author={Sternemann, E. and Jostmeier, T. and Ruppert, C. and Thunich, S. and Duc, H. T. and Podzimski, R. and Meier, Torsten and Betz, M.}, year={2016} }' chicago: 'Sternemann, E., T. Jostmeier, C. Ruppert, S. Thunich, H. T. Duc, R. Podzimski, Torsten Meier, and M. Betz. “Quantum Interference Control of Electrical Currents in GaAs Microstructures: Physics and Spectroscopic Applications.” Applied Physics B 122 (2016). https://doi.org/10.1007/s00340-015-6310-y.' ieee: 'E. Sternemann et al., “Quantum interference control of electrical currents in GaAs microstructures: physics and spectroscopic applications,” Applied Physics B, vol. 122, Art. no. 44, 2016, doi: 10.1007/s00340-015-6310-y.' mla: 'Sternemann, E., et al. “Quantum Interference Control of Electrical Currents in GaAs Microstructures: Physics and Spectroscopic Applications.” Applied Physics B, vol. 122, 44, 2016, doi:10.1007/s00340-015-6310-y.' short: E. Sternemann, T. Jostmeier, C. Ruppert, S. Thunich, H.T. Duc, R. Podzimski, T. Meier, M. Betz, Applied Physics B 122 (2016). date_created: 2019-10-18T08:35:38Z date_updated: 2025-12-16T11:33:09Z department: - _id: '15' - _id: '170' - _id: '293' - _id: '230' - _id: '429' - _id: '35' - _id: '429' doi: 10.1007/s00340-015-6310-y intvolume: ' 122' language: - iso: eng project: - _id: '59' name: TRR 142 - Subproject A2 - _id: '64' name: TRR 142 - Subproject A7 - _id: '56' name: TRR 142 - Project Area C - _id: '72' name: TRR 142 - Subproject C2 - _id: '53' name: 'TRR 142: Maßgeschneiderte nichtlineare Photonik: Von grundlegenden Konzepten zu funktionellen Strukturen' publication: Applied Physics B publication_identifier: issn: - 0946-2171 - 1432-0649 publication_status: published status: public title: 'Quantum interference control of electrical currents in GaAs microstructures: physics and spectroscopic applications' type: journal_article user_id: '16199' volume: 122 year: '2016' ... --- _id: '4331' abstract: - lang: eng text: "We report about the fabrication and analysis of high Q photonic crystal cavities with metallic\r\nSchottky-contacts. The structures are based on GaAs n-i membranes with an InGaAs quantum well\r\nin the i-region and nanostructured low ohmic metal top-gates. They are designed for photocurrent\r\nreadout within the cavity and fast electric manipulations. The cavity structures are characterized by\r\nphotoluminescence and photocurrent spectroscopy under resonant excitation. We find strong cavity\r\nresonances in the photocurrent spectra and surprisingly high Q-factors up to 6500. Temperature dependent\r\nphotocurrent measurements in the region between 4.5K and 310K show an exponential\r\nenhancement of the photocurrent signal and an external quantum efficiency up to 0.26." article_number: '041113' article_type: original author: - first_name: W. full_name: Quiring, W. last_name: Quiring - first_name: M. full_name: Al-Hmoud, M. last_name: Al-Hmoud - first_name: A. full_name: Rai, A. last_name: Rai - first_name: Dirk full_name: Reuter, Dirk id: '37763' last_name: Reuter - first_name: A. D. full_name: Wieck, A. D. last_name: Wieck - first_name: Artur full_name: Zrenner, Artur id: '606' last_name: Zrenner orcid: 0000-0002-5190-0944 citation: ama: Quiring W, Al-Hmoud M, Rai A, Reuter D, Wieck AD, Zrenner A. Photonic crystal cavities with metallic Schottky contacts. Applied Physics Letters. 2015;107(4). doi:10.1063/1.4928038 apa: Quiring, W., Al-Hmoud, M., Rai, A., Reuter, D., Wieck, A. D., & Zrenner, A. (2015). Photonic crystal cavities with metallic Schottky contacts. Applied Physics Letters, 107(4). https://doi.org/10.1063/1.4928038 bibtex: '@article{Quiring_Al-Hmoud_Rai_Reuter_Wieck_Zrenner_2015, title={Photonic crystal cavities with metallic Schottky contacts}, volume={107}, DOI={10.1063/1.4928038}, number={4041113}, journal={Applied Physics Letters}, publisher={AIP Publishing}, author={Quiring, W. and Al-Hmoud, M. and Rai, A. and Reuter, Dirk and Wieck, A. D. and Zrenner, Artur}, year={2015} }' chicago: Quiring, W., M. Al-Hmoud, A. Rai, Dirk Reuter, A. D. Wieck, and Artur Zrenner. “Photonic Crystal Cavities with Metallic Schottky Contacts.” Applied Physics Letters 107, no. 4 (2015). https://doi.org/10.1063/1.4928038. ieee: W. Quiring, M. Al-Hmoud, A. Rai, D. Reuter, A. D. Wieck, and A. Zrenner, “Photonic crystal cavities with metallic Schottky contacts,” Applied Physics Letters, vol. 107, no. 4, 2015. mla: Quiring, W., et al. “Photonic Crystal Cavities with Metallic Schottky Contacts.” Applied Physics Letters, vol. 107, no. 4, 041113, AIP Publishing, 2015, doi:10.1063/1.4928038. short: W. Quiring, M. Al-Hmoud, A. Rai, D. Reuter, A.D. Wieck, A. Zrenner, Applied Physics Letters 107 (2015). date_created: 2018-08-30T13:13:46Z date_updated: 2022-01-06T07:00:56Z department: - _id: '15' - _id: '230' - _id: '35' doi: 10.1063/1.4928038 intvolume: ' 107' issue: '4' language: - iso: eng project: - _id: '53' name: TRR 142 - _id: '56' name: TRR 142 - Project Area C - _id: '74' name: TRR 142 - Subproject C4 - _id: '57' name: TRR 142 - Project Area Z - _id: '77' name: TRR 142 - Subproject Z1 publication: Applied Physics Letters publication_identifier: issn: - 0003-6951 - 1077-3118 publication_status: published publisher: AIP Publishing status: public title: Photonic crystal cavities with metallic Schottky contacts type: journal_article user_id: '49428' volume: 107 year: '2015' ...